褐藻多糖类化合物对卵磷脂氧化的抑制作用

Antioxidation of brown algae polysaccharides to phosphatidylcholine

褐藻多糖类化合物在乳化体系中对卵磷脂（ＰＣ）氧化具抑制作用，通过测定卵磷脂氢过氧化物（ＰＣ－ＯＯＨ）含量，确定各化合物的抗氧化能力。结果表明：在自由基引发剂（ＡＡＰＨ）作用下，褐藻多糖类化合物（褐藻胶ＡＬＧ、磺化褐藻胶ＳＡＬＧ、甘糖酯ＰＧＭＳ、藻酸双酯钠ＰＳＳ，５０μｍｏｌ／Ｌ）对ＰＣ氧化的抑制作用均比ＶＣ（６０μｍｏｌ／Ｌ）好，但不如ＶＥ（３０μｍｏｌ／Ｌ）的效果好；抑制顺序是：ＶＥ＞ＳＡＬＧ＞ＰＧＭＳ＞ＰＳＳ＞ＡＬＧ＞ＶＣ。

The antioxidative ability of brown algae polysaccharides to phosphatidylcholine (PC)in water was determined by testing the concentration of phosphatidylcholine hydroperoxide (PC-OOH).In the presence of free radical initiator AAPH,the antioxidations of alginate(ALG),sulfated alginate(SALG),propylene glycol alginate sodium sulfate(PSS)and propylene glycol mannurate sulfate(PGMS),50μmol/L repectively,are all better than that of 60μmol/L Vc,but poorer than that of 30μmol/L V E.And the antioxidative ability of brown algae polysaccharides to phosphatidylcholine is V E>SALG>PGMS>PSS>ALG>V C。